package com.custom.config;

import com.custom.io.Resource;
import com.custom.pojo.Configuration;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.beans.PropertyVetoException;
import java.io.InputStream;
import java.util.List;
import java.util.Properties;

public class XMLConfigBuilder {

    private Configuration configuration;

    public XMLConfigBuilder(){
        this.configuration=new Configuration();
    }

    public Configuration parseConfig(InputStream inputStream) throws DocumentException, PropertyVetoException {
        Document document=new SAXReader().read(inputStream);
        Element rootElement=document.getRootElement();
        List<Element> list=rootElement.selectNodes("//property");
        Properties properties= new Properties();
        for(Element element:list){
            String name=element.attributeValue("name");
            String value=element.attributeValue("value");
            properties.setProperty(name,value);
        }
        ComboPooledDataSource comboPooledDataSource=new ComboPooledDataSource();
        comboPooledDataSource.setDriverClass(properties.getProperty("driverClass"));
        comboPooledDataSource.setJdbcUrl(properties.getProperty("jdbcUrl"));
        comboPooledDataSource.setUser(properties.getProperty("user"));
        comboPooledDataSource.setPassword(properties.getProperty("password"));
        configuration.setDataSource(comboPooledDataSource);

        List<Element> mapperList=rootElement.selectNodes("//mapper");
        for(Element element:mapperList){
            String mapperPath=element.attributeValue("resource");
            InputStream resource=Resource.getResourceAsStram(mapperPath);
            XMLMapperBuilder xmlMapperBuilder=new XMLMapperBuilder(configuration);
            xmlMapperBuilder.parse(resource);
        }
        return configuration;
    }
}
